Finding the Fourth Proportional to 1,368,811,517.10, 1,888,960,395.74 and 742,279,778.97
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Solution
The fourth proportional to 1,368,811,517.10, 1,888,960,395.74 and 742,279,778.97 is: 1,024,346,367.28
Step by Step Solution
- Step 1: Write the proportion equation
1,368,811,517.10 : 1,888,960,395.74 = 742,279,778.97 : x - Step 2: Convert to fraction form
1,368,811,517.10/1,888,960,395.74 = 742,279,778.97/x - Step 3: Cross multiply
1,368,811,517.10x = 1,888,960,395.74 × 742,279,778.97 - Step 4: Simplify right side
1,368,811,517.10x = 1,402,137,105,022,175,744 - Step 5: Solve for x
x = 1,402,137,105,022,175,744/1,368,811,517.10 - Step 6: Final answer
x = 1,024,346,367.28
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.